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udev rules file to statically name sound cards in alsa and pulseaudio with the same vendor, product and serial id.
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# This is a sample ude rules file to staticaly assign names to sound cards (in this case USB) that have the exact | |
# same product, vendor and serial number. This normally creates card names in pulseaudio that are a combination of this | |
# attributes plus an auto incrementing numbering, the problem is that the cards will get their names depending on the | |
# order the cards are plugged in. | |
# This udev rules fixes that issues by assigning a name to any card that is plugged in the same USB port, I don't know | |
# any other way. | |
# | |
# Name this file something like /etc/udev/rules.d/95-identical-cards-names.rules | |
# The list of cards should be changed to match your system, the only lines you are supposed to change/remove/add | |
# are DEVPATHs, look a the comments comments to see where to get the soundcard path. | |
# | |
# | |
# For alsa card naming (check with `cat /proc/asound/cards`) | |
# | |
SUBSYSTEM!="sound", GOTO="alsa_naming_end" | |
ACTION!="add", GOTO="alsa_naming_end" | |
# DEVPATH can be obtained by looking at `udevadm monitor --subsystem=sound` while pluging in the sound card. | |
# Do one card at a time, the "?" char on card should stay as it matches any card number that may pop on that USB port. | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.5/2-1.3.5:1.0/sound/card?", ATTR{id}="MyCard1" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.7/2-1.3.7:1.0/sound/card?", ATTR{id}="MyCard2" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.3/2-1.3.3:1.0/sound/card?", ATTR{id}="MyCard3" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.1/2-1.3.1.4/2-1.3.1.4:1.0/sound/card?", ATTR{id}="MyCard4" | |
LABEL="alsa_naming_end" | |
# | |
# For pulsaudio card naming (check with `pacmd list-sources`) | |
# | |
# This could go in a separate file if you want | |
SUBSYSTEM!="sound", GOTO="pa_naming_end" | |
ACTION!="change", GOTO="pa_naming_end" | |
KERNEL!="card*", GOTO="pa_naming_end" | |
# Same as before, edit these lines at will. PulseAudio will notice the PULSE_NAME value and name the card with that. | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.5/2-1.3.5:1.0/sound/card?", ENV{PULSE_NAME}="MyCard1" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.7/2-1.3.7:1.0/sound/card?", ENV{PULSE_NAME}="MyCard2" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.3/2-1.3.3:1.0/sound/card?", ENV{PULSE_NAME}="MyCard3" | |
DEVPATH=="/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3.1/2-1.3.1.4/2-1.3.1.4:1.0/sound/card?", ENV{PULSE_NAME}="MyCard4" | |
LABEL="pa_naming_end" |
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